update todo

TODO.md

@@ -156,77 +156,6 @@ Out of scope for V1: file-format alternatives (SVG, PDF), themed
 color overrides for export (always uses the active terminal theme),
 non-chart command output as PNG.
 
-## CLI architecture overhaul — priority MEDIUM
-
-The CLI surface has grown to 21 top-level commands and the dispatch
-machinery in `src/main.zig` is starting to bloat. Three related gaps,
-all best addressed together because they share the same refactor
-vehicle:
-
-1. **No per-command `--help`.** `zfin help` shows a wall of every
-   command and every flag. There's no way to ask "what does
-   `projections` accept?" without grepping the top-level usage.
-   Every command should support `zfin <command> --help` printing
-   just that command's synopsis, flags, and a few examples.
-2. **`usage` text is roughly chronological-by-feature.** Re-group it
-   into workflow sections so users can scan for what they need:
-     - **Per-symbol lookups:** `perf`, `quote`, `history` (symbol
-       mode), `divs`, `splits`, `options`, `earnings`, `etf`
-     - **Portfolio analysis:** `portfolio`, `analysis`, `history`
-       (portfolio mode), `projections`, `milestones`
-     - **Time-series & journaling:** `snapshot`, `compare`,
-       `contributions`
-     - **Data hygiene:** `audit`, `enrich`, `lookup`
-     - **Infra:** `cache`, `version`, `interactive`
-3. **Per-command flag parsing lives inline in `runCli`.** It's
-   ~500 lines now. The `projections`, `contributions`, and `compare`
-   branches each carry ~50 lines of inline flag parsing plus their
-   own conflict-detection. Each command module should own its own
-   `parseArgs()`; `runCli` should be pure dispatch.
-
-The natural mechanism for all three is a **command registry table**
-mirroring the `tab_modules` registry in `src/tui.zig`:
-
-```zig
-// src/main.zig
-const command_registry = .{
-    .perf = @import("commands/perf.zig"),
-    .quote = @import("commands/quote.zig"),
-    // ...
-};
-
-// each command module exposes:
-//   pub const meta = .{
-//       .help = "perf <SYMBOL>  Show trailing returns ...",
-//       .group = .symbol_lookup,
-//       .takes_symbol = true,
-//       .needs_portfolio_path = false,
-//   };
-//   pub fn parseArgs(allocator, args, today) !ParsedArgs
-//   pub fn run(io, allocator, *DataService, parsed, today, color, *Writer) !void
-```
-
-A comptime walk over the registry produces:
-- The grouped `usage` text (sort by `meta.group`, render section
-  headers).
-- Per-command help dispatch (`zfin <cmd> --help` prints
-  `meta.help` plus the parsed flag descriptors).
-- The dispatch chain itself (replace the giant `if-else if`).
-- The "does this command take a symbol?" / "does it need a
-  portfolio path?" decisions currently scattered across `runCli`.
-
-**Driver:** the per-command `--help` is the loudest user-facing gap;
-the registry refactor is the cleanest way to land it without
-scattering help text across more files. Also unblocks `zfin doctor`
-(below) and the unified time-range parser (below) by giving them
-a clean module shape to plug into.
-
-**Open question for when this is picked up:** how to handle the
-`history` command's two modes (symbol vs portfolio) under a single
-registry entry. Probably one entry with a parser that branches on
-`args[0]`, same as today — but the registry shape should accommodate
-that without ceremony.
-
 ## `zfin doctor` health-check command — priority LOW
 
 Front-door command for the file constellation and environment.
@@ -327,47 +256,6 @@ README still says "six tabs," actual count is eight (Portfolio,
 Quote, Performance, Options, Earnings, Analysis, History,
 Projections).
 
-## Unified time-range flag parser — priority LOW
-
-`compare`, `contributions`, `projections --vs`, and `projections
---as-of` all accept overlapping but slightly different time-range
-inputs. Today there are two helpers in `src/commands/common.zig`
-(`parseAsOfDate`, `parseCommitSpec`) and the conflict-detection
-logic (`since != null and before_spec != null`, etc.) is duplicated
-across each command's flag-parsing block in `main.zig`.
-
-### Sketch
-
-```zig
-// src/commands/common.zig
-pub const TimeRange = struct {
-    before: Endpoint,
-    after: Endpoint,
-    pub const Endpoint = union(enum) {
-        date: Date,
-        commit_spec: CommitSpec,
-        live,
-        head,
-    };
-};
-pub fn parseTimeRange(args: ...) !TimeRange { ... }
-```
-
-Each command consumes a `TimeRange` and decides which endpoint
-combinations make sense:
-- `compare` rejects `live`-on-both-sides.
-- `contributions` rejects `live` entirely (no meaningful "live
-  contributions diff").
-- `projections --vs` accepts `live` on either side.
-
-### Naturally folds into the CLI architecture overhaul
-
-Once each command has its own `parseArgs()` (per the CLI overhaul
-entry above), the time-range parser becomes a shared utility those
-parsers call. Could either land standalone or be pulled in as part
-of the overhaul. If the overhaul lands first, this is one of its
-follow-ups; if this lands first, the overhaul inherits it for free.
-
 ## Split `audit.zig` into per-broker reconcilers — priority LOW
 
 `src/commands/audit.zig` is 3438 lines — the largest command file